It tries to insert the metadata into the app that triggers multi window compatibility. I have had some success with it. The version I linked to is the free version and it will only do pop up windows. However IF the pop up window works for you, then you can pay for the full version ($2.50 I think) and it will do the multi window thing too.

A few notes... its flakey and not every app likes multi window. Waze worked great in multi window on my N2, doesn't work on my N4. I have a couple of programs that it works fine for. Also, you MUST go into the play store app and turn off auto update for any app that you modify with this program. If the app updates its self you lose the multi window features.

I did use Netflix on my N2 with multiwindow from time to time, so it might work for you.

Thank you boufa! That worked for getting Netflix into a window. Very fast and easy. It seems to scale it down nicely too so the high DPI of the screen makes it hella sharp.

Sadly whenever Netflix loses focus it pauses the show. Clicking back into Netflix lets you unpause. This at least lets me quickly switch between watching and doing other stuff. Thank you very much for recommending that app.

There's one oddity if anyone else does this but I have a workaround. Sometimes it gets stuck in vertical even though the phone is horizontal. If you need to get Netflix to switch into horizontal mode (it seems to get stuck in vertical sometimes when rotating) you can open another horizontal app (I open the Gmail app) and it tricks it into rotating.